1949 Report VALLEEVUE TEST GARDEN Vd 

CURVULARIA SUSCEPTIBILITY TESTS 
Gladiolus disease resistance tests (curvularia) are conducted at the Plant 
Industry Station of the United States Department of Agriculture, Beltsville, 
Maryland. Those responsible for this testing program are S. L. Emsweller!, Philip 
Brierley?, W. D. McClellan? and R. L. Pryor*. Varieties listed in Part I of this report 
will be innoculated in 1950 and included as part of the regular report. 
Dr. Emsweller informs us that a two year disease resistance test to curvularia 
is necessary to ascertain whether varieties are resistant to this fungus. Obser- 
vations at Beltsville reveal that certain varieties have a susceptibility in the small 
plant stage, growth from cormels, but a resistance in larger plants from large corms. 
In some other varieties the reverse is true. This necessitates a two year test which 
will be reported in the 1950 bulletin of the test garden. 
The following varieties grown from cormels were innoculated with curvularia 
lunata (wakker) Boedijn on August 25, 1949: 
SEVERE CURVULARIA INFECTION 
Badger Beauty Crackerjack Lois Spindrift 
Big Top Daphne Personality Spitfire 
Bit o’ Heaven Eighth Army Picardy Summer Gal 
Bridesmaid Expanse Silver Sword Thriller 
Butterscotch Lipstick Sir Galahad Tunesia 
W. R. Reader 
MILD CURVULARIA INFECTION 
Bronze King Gay Lally Morning Kiss Silentium 
Chantilly Golden State Nadia Storm Cloud 
Colonial Maid Gracie Allen Persian Beauty Strathnaver 
Connecticut Yankee Gray Dawn Phantom Beauty Sunlight 
Debutante Lady Jane Purple Supreme Sunspot 
Debonair Mansoer Ravel Topflight 
Dr. F. E. Bennett Margraten Ruby 
Fair Angel Maxwelton Salmans Glory 
NO INFECTION OBSERVED 
American Beauty Harry Hopkins Miss Wisconsin Snow Baby 
Blue Lagoon Jays Joy Musio Clementi Spice and Span 
Cararra Lady Boo O. M. Brown Spotlight 
Carnival Lady Eve Oriental Pearl Stoplight 
Consolor Lancaster Pacifica Susquehanna 
Dainty Miss Lavender and Gold _ Pastel Tarawa 
Daisy Mae Legionaire Paul Rubens Titan 
Dieppe Lily White Rampart Topscore 
Dragons Blood Lovelace Redowa Trocadero 
Drum Major Loveliness Reliant Twenty Grand 
Eldorado Margaret Barrett Rose Charm Twilight 
Firebrand Marimba Rosette Uncle Tom 
General Eisenhower Mid-America Siboney War Paint 
Golden Ophelia Mighty Monarch Silver Gull White Butterfly 
1. Principal Horticulturist 2. Senior Pathologist 3. Pathologists 
All members of Division of Fruit and Vegetable Crops and Diseases, Bureau 
Plant Industry, Soils and Agricultural Engineering, Agricultural Research Admini- 
stration, United States Department of Agriculture, Beltsville, Maryland. 
TERMS AND ABBREVIATIONS 
FLORET COLOR DESCRIPTIVE ity or to intercellular break-down 
TERMS: due to age of the floret. 
BLOTCH—A conspicuous mark usually FEATHERING—Irregular sweeps of a 
restricted to the throat or lower deeper shade of the coior or hue, 
petal. usually quite aan in Hane ae 
, . ; in intensity. It is cause y the 
Magee ue mark in the throat epistatic effect of mild mosaic 
Pc POCA: present in practically all gladiolus 
FADING—Bleaching of color usually varieties. Hot, humid weather tends 
caused by intense heat, high humid- to increase this condition. 
